CN219881322U

CN219881322U - Flexible center structure

Info

Publication number: CN219881322U
Application number: CN202321244781.XU
Authority: CN
Inventors: 乔凌云
Original assignee: Yichang Changjiang Machine Technology Co Ltd
Current assignee: Yichang Changjiang Machine Technology Co Ltd
Priority date: 2023-05-22
Filing date: 2023-05-22
Publication date: 2023-10-24
Anticipated expiration: 2033-05-22

Abstract

The utility model provides a flexible center structure which comprises a bottom plate, wherein a linear guide rail is fixed on the outer wall of the bottom plate, a sliding block is slidably arranged on the linear guide rail, a center seat is fixed at the top of the sliding block, a center is arranged on the center seat, a top block is fixed at the top of the bottom plate and positioned at the tail end of the linear guide rail, a flexible jacking mechanism is arranged between the top block and the center seat, and a stroke control mechanism is arranged between the top block and the center seat. The center structure can realize stable and accurate adjustment of the center tightening force, and the whole system is stable and reliable.

Description

Flexible center structure

Technical Field

The utility model relates to the technical field of machining, in particular to a flexible center structure.

Background

The structure of the tip is often used when machining shaft parts in machining, and the tip plays a role in tightening a workpiece, positioning and compacting. In the case where the workpiece is easily deformed when the axial tip is butted up in the case of poor processing rigidity, such as a crankshaft, an elongated shaft, an eccentric shaft, a bracket, and the like, it is often necessary to precisely adjust the butted up force of the tip to prevent the butted up from being deformed. The center is driven by hydraulic, pneumatic or servo. Has the following disadvantages:

1. the pressure is unstable. The pressure is not stable for a long time due to the compressibility of oil and gas and the disadvantage that oil is greatly affected by temperature change, and the fluctuation is large and inaccurate.

2. The servo-driven center is easy to cause motor alarm and damage the motor by changing the current to adjust the pressure.

Disclosure of Invention

In order to solve the technical problems, the utility model provides the flexible center structure, which can realize stable and accurate adjustment of the center tightening force, and the whole system is stable and reliable.

In order to achieve the technical characteristics, the aim of the utility model is realized in the following way: the utility model provides a flexible center structure, includes the bottom plate, be fixed with linear guide on the outer wall of bottom plate, slidable mounting has the slider on the linear guide, the top of slider is fixed with center seat, install center on the center seat, the top of bottom plate and be located linear guide's afterbody end-to-end is fixed with the kicking block, install flexible tight mechanism in top between kicking block and the center seat, install travel control mechanism between kicking block and the center seat.

The novel self-locking type self-locking device is characterized in that a center through hole for installing a center is machined in the center seat, a limiting step is machined in the center, the limiting step is matched with the end face of the center through hole in a positioning mode, and a locking nut is installed at the tail of the center and used for limiting and fixing the center in the center through hole.

The flexible jacking mechanism comprises a support fixed at the tail part of the center seat, a screw is fixed on the support, a screw through hole is formed in the screw, penetrates through the top block, a spring is sleeved outside the screw, and the spring is arranged between the support and the top block.

The support is provided with a threaded hole, and the screw is installed on the threaded hole through threaded fit.

The travel control mechanism is arranged on a signaling block on the outer side wall of the top block, the signaling block is matched with the first proximity switch and the second proximity switch, the first proximity switch and the second proximity switch are fixedly arranged on a bracket through locking nuts, and the bracket is fixed on the outer side wall of the top seat.

The first proximity switch and the second proximity switch are connected with the controller through signal lines, and the signal output end of the controller is connected with a driving device for driving the bottom plate to move.

The utility model has the beneficial effects that:

1. the utility model designs a mechanical flexible mechanism, which not only ensures the precision of the center, but also can accurately fine-tune the top pressing force of the center, and meanwhile, can not give an alarm.

2. By adopting the structure of the utility model, the stable and accurate adjustment of the jacking force of the center can be realized, and the whole system is stable and reliable.

3. The flexible propping mechanism can realize flexible propping of the workpiece.

4. Through the cooperation between screw hole and the screw, can carry out the preconditioning to the compression volume of spring.

5. The travel control mechanism can realize travel control, when the first proximity switch sends a signal when the first proximity switch is at the position, the controller receives the signal for stopping movement, the driving device is controlled to stop movement, the bottom plate is stopped, and the jacking force is fixed.

6. The control system can realize automatic control of the system.

Drawings

The utility model is further described below with reference to the drawings and examples.

Fig. 1 is a front view of the present utility model.

Fig. 2 is a side view of the present utility model.

In the figure: the device comprises a bottom plate 1, a linear guide rail 2, a sliding block 3, a center seat 4, a center 5, a support 6, a spring 7, a screw 8, a top block 9, a signaling block 10, a bracket 11, a second proximity switch 12, a first proximity switch 13, a locking nut 14, a limiting step 15, a center through hole 16, a threaded hole 17 and a workpiece 18.

Detailed Description

Embodiments of the present utility model will be further described with reference to the accompanying drawings.

Example 1:

referring to fig. 1-2, a flexible center structure comprises a bottom plate 1, a linear guide rail 2 is fixed on the outer wall of the bottom plate 1, a sliding block 3 is slidably installed on the linear guide rail 2, a center seat 4 is fixed at the top of the sliding block 3, a center 5 is installed on the center seat 4, a top block 9 is fixed at the top of the bottom plate 1 and positioned at the tail end of the linear guide rail 2, a flexible tightening mechanism is installed between the top block 9 and the center seat 4, and a stroke control mechanism is installed between the top block 9 and the center seat 4. By adopting the structure of the utility model, the stable and accurate adjustment of the jacking force of the center can be realized, and the whole system is stable and reliable. In the concrete working process, the bottom plate 1 drives the parts at the top to integrally move, the center seat 4 drives the center 5 to initially jack the workpiece 18, the flexible jacking effect is achieved through the flexible jacking mechanism, the stroke control mechanism is used for controlling the stroke, and accordingly the jacking force is guaranteed to be consistent.

Further, a center through hole 16 for installing the center 5 is machined in the center seat 4, a limiting step 15 is machined in the center 5, the limiting step 15 is matched with the end face of the center through hole 16 in a positioning mode, and a locking nut 14 is installed at the tail of the center 5 and used for limiting and fixing the center 5 in the center through hole 16. The structure can realize reliable fixing and mounting of the center 5.

Further, the flexible jacking mechanism comprises a support 6 fixed at the tail of the center seat 4, a screw 8 is fixed on the support 6, the screw 8 penetrates through a screw through hole in the top block 9, a spring 7 is sleeved outside the screw 8, and the spring 7 is arranged between the support 6 and the top block 9. The flexible propping mechanism can realize flexible propping of the workpiece. In the tightening process, the spring 7 is compressed, and the effect of tightening force adjustment is achieved.

Further, a threaded hole 17 is formed in the support 6, and the screw 8 is mounted on the threaded hole 17 through threaded fit. By the engagement between the screw hole 17 and the screw 8 described above, the compression amount of the spring 7 can be pre-adjusted.

Further, the stroke control mechanism is arranged on a signaling block 10 on the outer side wall of the top block 9, the signaling block 10 is matched with a first proximity switch 13 and a second proximity switch 12, the first proximity switch 13 and the second proximity switch 12 are fixedly arranged on a bracket 11 through locking nuts, and the bracket 11 is fixed on the outer side wall of the top seat 4. The travel control mechanism can realize travel control, when the first proximity switch 13 reaches the position, the controller receives a signal for stopping movement when the first proximity switch 13 sends a signal, the driving device is controlled to stop movement, the bottom plate 1 is stopped, and the jacking force is fixed.

Further, the first proximity switch 13 and the second proximity switch 12 are connected with a controller through signal wires, and a signal output end of the controller is connected with a driving device for driving the bottom plate 1 to move. The control system can realize automatic control of the system.

Example 2:

the application method of the flexible center structure comprises the following steps:

step one, when a workpiece 18 needs to be clamped, a driving device drives a bottom plate 1 to move, so as to drive a center 5 to move towards the workpiece 18;

step two, in the moving process of the bottom plate 1, firstly, the center 5 contacts the workpiece 18, and the center 5 and the center seat 4 do not move along the linear guide rail 2 at the actual moment;

step three, when the bottom plate 1 is driven to move continuously, the center seat 4 slides relatively along the linear guide rail 2, the spring 7 is compressed, and the workpiece 18 is pressed by the pressure of the spring 7;

step four, in the moving process of the center seat 4, the bracket 11, the first proximity switch 13 and the second proximity switch 12 are driven to synchronously move, when the first proximity switch 13 on the center seat 4 sends a signal, the controller receives a signal for stopping movement, the driving device is controlled to stop movement, the bottom plate 1 is stopped, and the jacking force is fixed at the moment;

fifthly, when the jacking force needs to be adjusted, the pre-pressure of the spring 7 is adjusted only through the adjusting screw 8;

step six, the second proximity switch 12 is used for indicating that the tip structure is out of the tightening state.

Claims

1. The utility model provides a flexible center structure, its characterized in that, includes bottom plate (1), be fixed with linear guide (2) on the outer wall of bottom plate (1), slidable mounting has slider (3) on linear guide (2), the top of slider (3) is fixed with center seat (4), install top (5) on center seat (4), the top of bottom plate (1) and lie in the afterbody end-to-end of linear guide (2) are fixed with kicking block (9), install flexible tight mechanism in top between kicking block (9) and center seat (4), install travel control mechanism between kicking block (9) and center seat (4).

2. The flexible center structure according to claim 1, wherein a center through hole (16) for installing a center (5) is formed in the center seat (4), a limiting step (15) is formed in the center (5), the limiting step (15) is matched with the end face of the center through hole (16) in a positioning mode, and a locking nut (14) is installed at the tail portion of the center (5) and used for limiting and fixing the center (5) in the center through hole (16).

3. The flexible center structure according to claim 1, wherein the flexible center pushing mechanism comprises a support (6) fixed at the tail of the center seat (4), a screw (8) is fixed on the support (6), a screw through hole of the screw (8) penetrates through a top block (9), a spring (7) is sleeved outside the screw (8), and the spring (7) is arranged between the support (6) and the top block (9).

4. A flexible tip structure according to claim 3, characterized in that the support (6) is provided with a threaded hole (17), and the screw (8) is mounted on the threaded hole (17) by means of a threaded fit.

5. The flexible center structure according to claim 1, wherein the stroke control mechanism is arranged on a signaling block (10) on the outer side wall of the top block (9), the signaling block (10) is matched with a first proximity switch (13) and a second proximity switch (12), the first proximity switch (13) and the second proximity switch (12) are fixedly arranged on a bracket (11) through locking nuts, and the bracket (11) is fixed on the outer side wall of the center seat (4).

6. A flexible tip structure according to claim 5, characterized in that the first proximity switch (13) and the second proximity switch (12) are connected to a controller via signal lines, the signal output of the controller being connected to a driving device for driving the movement of the base plate (1).